creating loop for subtracting values from matrix which size is variable.

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sermet
sermet 2013-5-18
for example
a=[y1,x1,y2,x2,....yn+1,xn+1]
I wanna subtract all y values as y_column=[y1;y2;y3;y4;.....;yn+1] and
I wanna subtract all x values as x_column=[x1;x2;x3;x4;......;xn+1]
what kind of loop I have to write for these subtracting?

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Azzi Abdelmalek
Azzi Abdelmalek 2013-5-18
out1=a(1:2:end)
out2=a(2:2:end)

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